<div class="registration">
    <div class="contenttitle">Регистрация в системе</div>
    <form action="" method="POST">
        <table>
            <tr><td>Логин</td><td><input type="text" name="login"></td></tr>
            <tr><td>Пароль</td><td><input type="password" name="password"></td></tr>
            <tr><td colspan="2"><input type="submit" value="Зарегистрироваться"></td></tr>
        </table>
        <input type="hidden" name="action" value="registration">
    </form>
</div>